Однорядный цилиндрический роликоподшипник NSK NU228EMC4

Описание

Boundary Dimensions d 140 mm Bore diameter D 250 mm Outside diameter B 42 mm Width FW 169 mm Raceway diameter of inner ring r (min.) 3 mm Chamfer dimension r1 (min.) 3 mm Chamfer dimension Basic Load Ratings C r 485000 N Basic dynamic load rating C 0r 515000 N Basic static load rating Speeds Thermal Speed Rating (Oil-bath) 3200 min -1 Oil-bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced-circulation oil) 4500 min -1 Properly designed and controlled forced-circulation oil lubrication Grease 2400 min -1 Grease lubrication Oil (Oil-bath) 3000 min -1 Oil-bath lubrication Abutment and Fillet Dimensions db (min.) 153 mm Diameter of shaft / spacer sleeve abutment db (max.) 165 mm Diameter of shaft / spacer sleeve abutment dc (min.) 171 mm Diameter of shaft abutment Da (max.) 237 mm Diameter of housing abutment ra (max.) 2.5 mm Radius of shaft or housing fillet rb (max.) 2.5 mm Radius of shaft or housing fillet Mass Mass approx. 9.21 kg Mass approx.